US5795291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cervical retractor system
Assignee: Individual
•
Filing: 1997-02-07
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Granted: 1998-08-18
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Expires: 2017-02-07
Abstract
Abstract A combination of complementary surgical instruments including a pair of retractors positioned at right angles to and overlaying one another during surgery. Each retractor has a pair of hinged arms. A top retractor has a stepped tip at each end of one arm to avoid interference with the bottom retractor during surgery. Each retractor has a pair of vertical semicircular flared openings in an outer edge of a blade securement end of a respective arm for demountable attachment of a surgical blade. The combination is especially useful in cervical or neck surgery.
Inventors
- 👤 Tibor Koros
- 👤 Gabriel Koros
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:38
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
149 words
A right oriented cervical retractor comprising: a stationary double hinged arm having a stationary segment, a middle hinged segment, and a hinged blade securement end having an outer edge; a toothed cross brace having one end secured to said stationary segment of said stationary arm; a movable double hinged arm having a housing for slidably engaging a portion of said toothed cross brace, a middle hinged segment, and a hinged blade securement end having an outer edge; said housing on said movable hinged arm having a crank means for moving said movable arm away from said stationary arm; a vertical semicircular flared opening in the outer edge of said blade securement end of said stationary arm for demountable attachment of a surgical blade; and a vertical semicircular flared opening in the outer edge of said blade securement end of said movable arm for demountable attachment of a surgical blade.
Claim 2
Dependent Claim
149 words
A right oriented cervical retractor comprising: a stationary double hinged arm having a stationary segment, a middle hinged segment, and a hinged blade securement end having an outer edge; a toothed cross brace having one end secured to said stationary segment of said stationary arm; a movable double hinged arm having a housing for slidably engaging a portion of said toothed cross brace, a middle hinged segment, and a hinged blade securement end having an outer edge; said housing on said movable hinged arm having a crank means for moving said movable arm away from said stationary arm; a vertical semicircular flared opening in the outer edge of said blade securement end of said stationary arm for demountable attachment of a surgical blade; and a vertical semicircular flared opening in the outer edge of said blade securement end of said movable arm for demountable attachment of a surgical blade.
Claim 3
Dependent Claim
138 words
The retractor as recited in claim 1 including: a surgical blade demountably secured to said vertical semicircular flared opening in the outer edge of said blade securement end of said stationary arm; a surgical blade demountably secured to said vertical semicircular flared opening in the outer edge of said blade securement end of said movable arm; each said blade having a generally flat top and a generally vertical face; a vertical post with a knob mounted on said top of each said blade; said post being positioned into said semicircular flared opening on each said stationary arm and said movable arm by a side loading movement to form a swivel lock to prevent disengagement of said blade from said arms during surgery because of the patient's soft tissue pressing against said vertical face of each said surgical blade.
Claim 4
Dependent Claim
37 words
The retractor as recited in claim 2 further comprising: a blade handle for clamping over said knob on said blade for allowing said blade to be positioned in place and then secured to said arm during surgery.
Claim 5
Dependent Claim
152 words
An offset cervical retractor comprising: a stationary double hinged arm having a stationary segment, a middle hinged segment, and an offset hinged blade securement end having an outer edge; a toothed cross brace having one end secured to said stationary segment of said stationary arm; a movable double hinged arm having a housing for slidably engaging a portion of said toothed cross brace, a middle hinged segment, and a hinged offset blade securement end having an outer edge; said housing on said movable hinged arm having a crank means for moving said movable arm away from said stationary arm; a vertical semicircular flared opening in the outer edge of said offset blade securement end of said stationary arm for demountable attachment of a surgical blade; and a vertical semicircular flared opening in the outer edge of said offset blade securement end of said movable arm for demountable attachment of a surgical blade.
Claim 6
Dependent Claim
152 words
An offset cervical retractor comprising: a stationary double hinged arm having a stationary segment, a middle hinged segment, and an offset hinged blade securement end having an outer edge; a toothed cross brace having one end secured to said stationary segment of said stationary arm; a movable double hinged arm having a housing for slidably engaging a portion of said toothed cross brace, a middle hinged segment, and a hinged offset blade securement end having an outer edge; said housing on said movable hinged arm having a crank means for moving said movable arm away from said stationary arm; a vertical semicircular flared opening in the outer edge of said offset blade securement end of said stationary arm for demountable attachment of a surgical blade; and a vertical semicircular flared opening in the outer edge of said offset blade securement end of said movable arm for demountable attachment of a surgical blade.
Claim 7
Dependent Claim
138 words
The retractor as recited in claim 4 including: a surgical blade demountably secured to said vertical semicircular flared opening in the outer edge of said blade securement end of said stationary arm; a surgical blade demountably secured to said vertical semicircular flared opening in the outer edge of said blade securement end of said movable arm; each said blade having a generally flat top and a generally vertical face; a vertical post with a knob mounted on said top of each said blade; said post being positioned into said semicircular flared opening on each said stationary arm and said movable arm by a side loading movement to form a swivel lock to prevent disengagement of said blade from said arms during surgery because of the patient's soft tissue pressing against said vertical face of each said surgical blade.
Claim 8
Dependent Claim
37 words
The retractor as recited in claim 4 further comprising: a blade handle for clamping over said knob on said blade for allowing said blade to be positioned in place and then secured to said arm during surgery.
Claim 9
Dependent Claim
325 words
A right oriented cervical retractor and an offset cervical retractor in combination for use in cervical surgery comprising: a right oriented cervical retractor comprising: a stationary double hinged arm having a stationary segment, a middle hinged segment, and a hinged blade securement end having an outer edge; a toothed cross brace having one end secured to said stationary segment of said stationary arm; a movable double hinged arm having a housing for slidably engaging a portion of said toothed cross brace, a middle hinged segment, and a hinged blade securement end having an outer edge; said housing on said movable hinged arm having a crank means for moving said movable arm away from said stationary arm; a vertical semicircular flared opening in the outer edge of said blade securement end of said stationary arm for demountable attachment of a surgical blade; a vertical semicircular flared opening in the outer edge of said blade securement end of said movable arm for demountable attachment of a surgical blade; an offset cervical retractor overlying said right oriented cervical retractor and comprising: a stationary double hinged arm having a stationary segment, a middle hinged segment, and an offset hinged blade securement end having an outer edge; a toothed cross brace having one end secured to said stationary segment of said stationary arm; a movable double hinged arm having a housing for slidably engaging a portion of said toothed cross brace, a middle hinged segment, and a hinged offset blade securement end having an outer edge; said housing on said movable hinged arm having a crank means for moving said movable arm away from said stationary arm; a vertical semicircular flared opening in the outer edge of said offset blade securement end of said stationary arm for demountable attachment of a surgical blade; and a vertical semicircular flared opening in the outer edge of said offset blade securement end of said movable arm for demountable attachment of a surgical blade.
Claim 10
Dependent Claim
325 words
A right oriented cervical retractor and an offset cervical retractor in combination for use in cervical surgery comprising: a right oriented cervical retractor comprising: a stationary double hinged arm having a stationary segment, a middle hinged segment, and a hinged blade securement end having an outer edge; a toothed cross brace having one end secured to said stationary segment of said stationary arm; a movable double hinged arm having a housing for slidably engaging a portion of said toothed cross brace, a middle hinged segment, and a hinged blade securement end having an outer edge; said housing on said movable hinged arm having a crank means for moving said movable arm away from said stationary arm; a vertical semicircular flared opening in the outer edge of said blade securement end of said stationary arm for demountable attachment of a surgical blade; a vertical semicircular flared opening in the outer edge of said blade securement end of said movable arm for demountable attachment of a surgical blade; an offset cervical retractor overlying said right oriented cervical retractor and comprising: a stationary double hinged arm having a stationary segment, a middle hinged segment, and an offset hinged blade securement end having an outer edge; a toothed cross brace having one end secured to said stationary segment of said stationary arm; a movable double hinged arm having a housing for slidably engaging a portion of said toothed cross brace, a middle hinged segment, and a hinged offset blade securement end having an outer edge; said housing on said movable hinged arm having a crank means for moving said movable arm away from said stationary arm; a vertical semicircular flared opening in the outer edge of said offset blade securement end of said stationary arm for demountable attachment of a surgical blade; and a vertical semicircular flared opening in the outer edge of said offset blade securement end of said movable arm for demountable attachment of a surgical blade.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-08-17 | 2002-02-16 | 2002-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-17 | 2006-02-16 | 2006-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-17 | 2010-02-16 | 2010-08-18 | $7700.00 | Window Closed / Lapsed |